IB PHYSICS Option D: Astrophysics

Includes the Sun, planets, moons, asteroids, and comets within our system.

Two stars orbiting a common center.

Cold, non-radiating matter inferred from physics.

A normal star undergoing hydrogen fusion to become helium.

Distance light travels in a year in space vacuum, approximately 9.461 × 10^12 kilometers.

Measures space distances using Earth's orbit.

Total power radiated by a star in all directions, measured in watts.

States a physical quantity is inversely proportional to the square of the distance from the source.

Relates absolute magnitude, luminosity, classification, and temperature of stars.

Maximum mass for a white dwarf, about 1.4 solar masses.